- add debug statement at the very beginning of a web socket request
- add debug statement in open, indicating that the connection has been accepted
- add timeout, so failed or slow kernel_info doesn't cause the request to never get a response
- don't send kernel_info_request before authenticating the request
The last one required some icky coroutine shenanigans,
because of our subclass structure, but it should work fine.
WebSocket connections will not open until kernel_info is retrieved,
removing a race condition waiting for the reply to indicate adaptation,
which could result in a v5 message being sent to a v4 kernel.
The reply is cached, so that it need not be requested on each new connection.
can happen if a message is waiting in a pipe and the web socket is closed before the message is handled.
And give ZMQChannels a nice repr with their kernel ID
- set linger on sockets (avoid hang on exit)
- actually close sockets, not just zmq streams (blame pyzmq, aka me)
seems to be necessary for js/notebook/shutdown test to avoid hanging on Python 3.4.
Min RK
Thomas Kluyver
Brian E. Granger
Zachary Sailer